An absorption feature in the spectrum of a gamma ray burst on 25 March 1978

Details An absorption feature in the spectrum of a gamma ray burst on 25 March 1978 An absorption feature in the spectrum of a gamma ray burst on 25 March 1978

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ans..conf..213h&link_type=abstract

In Max-Planck Inst. Phys. and Astrophys. Accreting Neutron Stars p 213-215 (SEE N83-15179 05-88)

Astronomy and Astrophysics

Astrophysics

14

Absorption Spectra, Gamma Ray Bursts, Gamma Ray Spectra, Cyclotron Radiation, Heao 1, Neutron Stars, Optical Measuring Instruments, Spectrum Analysis

Scientific paper

The High Energy X-ray and Low Energy Gamma Ray Experiment on HEAO-1 detected a gamma ray burst on March 25, 1978. The main peak of the event lasted 10 seconds, while less intense emission was observed for approximately 100 seconds. The burst spectrum shows an apparent absorption feature at 55 +/- 5 keV with an equivalent width of 13 +/- 3 keV, values commensurate with those reported for bursts recorded by the KONUS experiment. The integrated fluence between 30 keV and 6.1 Mev was 0.000015 ergs/sq cm. The detection syste has localized the burst source to within a degree of RA = 237.2 deg and Dec. = 76.4 deg.

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